GB1135714A - Firing circuit for semiconductor controlled rectifiers - Google Patents
Firing circuit for semiconductor controlled rectifiersInfo
- Publication number
- GB1135714A GB1135714A GB8340/67A GB834067A GB1135714A GB 1135714 A GB1135714 A GB 1135714A GB 8340/67 A GB8340/67 A GB 8340/67A GB 834067 A GB834067 A GB 834067A GB 1135714 A GB1135714 A GB 1135714A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fired
- nor1
- input
- supply
- supply voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000010304 firing Methods 0.000 title 1
- 239000004065 semiconductor Substances 0.000 title 1
- HCUOEKSZWPGJIM-YBRHCDHNSA-N (e,2e)-2-hydroxyimino-6-methoxy-4-methyl-5-nitrohex-3-enamide Chemical compound COCC([N+]([O-])=O)\C(C)=C\C(=N/O)\C(N)=O HCUOEKSZWPGJIM-YBRHCDHNSA-N 0.000 abstract 2
- 101001109689 Homo sapiens Nuclear receptor subfamily 4 group A member 3 Proteins 0.000 abstract 2
- 101000598778 Homo sapiens Protein OSCP1 Proteins 0.000 abstract 2
- 101001067395 Mus musculus Phospholipid scramblase 1 Proteins 0.000 abstract 2
- 102100022673 Nuclear receptor subfamily 4 group A member 3 Human genes 0.000 abstract 2
- 101100365087 Arabidopsis thaliana SCRA gene Proteins 0.000 abstract 1
- 101000668165 Homo sapiens RNA-binding motif, single-stranded-interacting protein 1 Proteins 0.000 abstract 1
- 102100039692 RNA-binding motif, single-stranded-interacting protein 1 Human genes 0.000 abstract 1
- 101150105073 SCR1 gene Proteins 0.000 abstract 1
- 101100134054 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) NTG1 gene Proteins 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
- H03K3/351—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region the devices being unijunction transistors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/241—Electric supplies
- B23K11/245—Electric supplies using a stepping counter in synchronism with the welding pulses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/25—Monitoring devices
- B23K11/252—Monitoring devices using digital means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is AC
- G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices
- G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only
- G05F1/45—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
- G05F1/455—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/64—Generators producing trains of pulses, i.e. finite sequences of pulses
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
1,135,714. Resistance welders. SQUARE D CO. 22 Feb., 1967 [8 March, 1966], No. 8340/67. Heading H2H. A phase controlled thyristor is fired by trains of H.F. pulses which are terminated just prior to supply voltage zeros. Thyristors SCR1, SCR2 are fired by pulse trains from relaxation oscillator transistors T2, T3 controlled by a unijunction transistor T1 which is fired by the charge on a capacitor C1 due to a " O " output (i.e. ground potential) from an OR gate comprising NOR1, NOR2 elements, one " O " input to which is derived from the supply 5 through a phase-shifting circuit 12, a wave squarer 14 and a mixer 16 which is also fed with double supply frequency " 1 " pulses extending over the supply voltage zero which inhibit the operation of transistor oscillators T1, T2. A " 1 " input to NOR1 is also provided when one or both fuses F1, F2 are blown due to overload current in a transformer TC3. The arrangement may control the current in a resistance welder.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53271066A | 1966-03-08 | 1966-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1135714A true GB1135714A (en) | 1968-12-04 |
Family
ID=24122845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8340/67A Expired GB1135714A (en) | 1966-03-08 | 1967-02-22 | Firing circuit for semiconductor controlled rectifiers |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3492512A (en) |
| GB (1) | GB1135714A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3584238A (en) * | 1968-10-24 | 1971-06-08 | Hubbell Inc Harvey | Full cycle control system |
| US3663950A (en) * | 1970-01-19 | 1972-05-16 | Struthers Dunn | Quad ac power switch with synch |
| US7295604B2 (en) * | 2003-11-24 | 2007-11-13 | International Business Machines Corporation | Method for determining jitter of a signal in a serial link and high speed serial link |
| EP2351628B1 (en) | 2008-09-30 | 2018-06-13 | Neturen Co., Ltd. | Welding device for metal and welding method for metal |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3315098A (en) * | 1964-06-22 | 1967-04-18 | Square D Co | Firing circuit for a controlled rectifier |
| US3387112A (en) * | 1964-09-08 | 1968-06-04 | Square D Co | Resistance welder control circuit with up-down slope control and current regulator circuits |
| US3383623A (en) * | 1964-10-28 | 1968-05-14 | Westinghouse Electric Corp | Pulse generators for phase controlled systems |
| US3354377A (en) * | 1965-08-05 | 1967-11-21 | Exxon Production Research Co | Electrical wave shaping apparatus and conversion apparatus |
| US3397344A (en) * | 1965-10-07 | 1968-08-13 | Skirpan Electronics Inc | Lighting control apparatus |
-
1966
- 1966-03-08 US US532710A patent/US3492512A/en not_active Expired - Lifetime
-
1967
- 1967-02-22 GB GB8340/67A patent/GB1135714A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3492512A (en) | 1970-01-27 |
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